Home / 920,977.50-1,378,915.66-470,728.88

Finding the Fourth Proportional to 920,977.50, 1,378,915.66 and 470,728.88

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Solution

The fourth proportional to 920,977.50, 1,378,915.66 and 470,728.88 is: 704,789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,977.50 : 1,378,915.66 = 470,728.88 : x
  2. Step 2: Convert to fraction form
    920,977.50/1,378,915.66 = 470,728.88/x
  3. Step 3: Cross multiply
    920,977.50x = 1,378,915.66 × 470,728.88
  4. Step 4: Simplify right side
    920,977.50x = 649,095,414,998.04
  5. Step 5: Solve for x
    x = 649,095,414,998.04/920,977.50
  6. Step 6: Final answer
    x = 704,789.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.